Book Review Book Review

on evaluating large-scale policy initiatives. The editors have assembled a fine collection of individ-ual chapters from experienced evaluators but, in my judgment, the whole is less than the sum of the parts. The title, Evaluating the Complex, would be more accurately stated as Evaluating the Com-plicated. Let me explain. Chapter 2 by distinguished Australian evaluation theorist and practitioner Patricia Rogers (Fun-nell & Rogers, 2011) explains the nature and implications of distinguishing the complicated from the complex: Interventions are usefully conceptualized as having complicated aspects if they have multiple compo-nents, which need to be brought together to achieve clearly specified outcomes. These might be different elements of the program (either occurring concurrently or occurring sequentially) or processes that oper-ate differently in different contexts. Expertise is needed in each of the components and also in the coor-dination of the parts. Complicated aspects also describe well the notion of ‘‘causal packages,’ ’ where interventions achieve their results in combination with other interventions or favorable conditions, or where multiple different causal paths can achieve the results. It is essential to report on these in terms of ‘‘what works for whom in what contexts,’ ’ taking into account differential results for different type